Low clearance accidents involve the collision of a road vehicle with an overhead object such as a bridge, roof overhang, or overpass.
According to one source, about 5,000 such accidents take place in the United States every year, inflicting about 100 million dollars in property damage.
Large truck and recreational vehicle drivers must remain vigilant to this problem at all times.
You can even update your GPS with a database of low clearance hazards from LowClearances.com.
This short video demonstrates just how quickly a small clearance issue can esculate into a major accident.